Since the launch of Mac OS X 10.9 Mavericks both Google’s Gmail and exchange accounts are not working correctly in the native mail app client in Mavericks. I face this bug, too. Apple is already working on fixing this problem, report 9tomac. In the meantime you can fix the bug for Google’s Gmail IMAP accounts following this work around. Up to now, there is no fix for exchange accounts.

The trick is to deactivate ‘Show in IMAP‘ for ‘All Mail‘, delete every single Gmail account in the native mail app in Mavericks, reactivate it and set up your Gmail accounts again:

Click on ‘Labels’, deactivate ‘Show in IMAP‘ for ‘All Mail‘ and go to your inbox (change in settings will be saved).

Source: miApple.me

Close the native mail app client in Mac OS X 10.9 Mavericks.

Go to ‘Preferences‘ in Mavericks, choose ‘Internet accounts‘ and delete all Gmail accounts. Important: Be sure that you had got an IMAP account set up. In the other case all your POP3 mail will be deleted.

Click on ‘Labels’, activate ‘Show in IMAP‘ for ‘All Mail‘ again and go to your inbox (change in settings will be saved).

Open the native mail app client in Mac OS X 10.9 Mavericks. Note: No Gmail accounts should be shown!

Go to ‘Preferences‘ in Mavericks, choose ‘Internet accounts‘ and add all Gmail accounts you deleted before. Last, but not least: You have just to wait some minutes, hours or days depending on the size of your Gmail mailboxes until the Gmail accounts work correctly again. In my cases it takes several hours for my main mail account and some ten minutes for my smaller accounts.

De-activating and re-activating ‘Show in IMAP’ for ‘All Mail’ fixes the bug in native mail client on Mac OS X 10.9 Mavericks. However, there is no fix to solve the same problem for exchange mail accounts.

wait and see! It can take a longer time until the folders are synchronized again. Have a look into your Gmail account in a web browser and go to your inbox there. If the files are still in the inbox, they will be synchronized again with your Mac.

A few years back I followed an excellent article by Joe Kissell titled “Achieving Email Bliss with IMAP, Gmail, and Apple Mail” (http://tidbits.com/article/10253). In that article he recommended unchecking the “All Mail” option back then. I’ve had no problems so far with Apple Mail pulling in my Gmail, most likely due to his sage advice.

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